I’ve heard that the corners of vinyl windows can crack or separate, allowing air or water to enter the home. What’s the best way to put vinyl windows together to avoid this problem?
Wood windows are put together using staples, which over time can come loose, or even fall out. Most vinyl and aluminum windows are screwed together and sometimes caulked. The day they leave the factory, most vinyl windows are “perfect”, meaning they are square in their construction, and free from gaps, cracks or other problems. But the real concern is, in what condition will they be in 5 years, 10 years, or even 25 years later. So, it’s recommended that you look for windows with sashes and master frames that are secured in the best way possible, which is Fusion Welding.

What is Fusion Welding?
Fusion welding is a process that can take four pieces of material, like your sash rails or master frame, and fuse them together into one single piece. This welding process eliminates air infiltration and unsightly joints. Plus, windows that are “fusion welded” do not need to have the corners caulked, or have silicone applied to them and are virtually maintenance free.

What are cam locks and vent limits?
Cam locks are used to tightly draw the sashes or your window together to reduce drafts. But more importantly, they are there to provide security. A good window will utilize two “tamper resistant” cam action locks when the width of the window is 28 inches or more. Companies who try to cut corners will only supply two locks when the width of the window is 32 inches or more.

Vent limits, are “stops” that are placed in the sash to prevent it from easily opening beyond a certain point. This permits the window to remain partially open and allow ventilation, while maintaining a level of security by preventing the sash from being completely opened. Not all manufacturers provide vent limits in their windows, but on our windows, this is a standard feature. Remember, vent limits are not security devices. Always close and lock your windows for added security.